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Improved condition variable documentation

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This commit is contained in:
Sam Lantinga 2011-01-27 10:40:17 -08:00
parent 86e36cceab
commit 2fd57ffe61
2 changed files with 37 additions and 10 deletions
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21
src/thread/generic/SDL_syscond.c
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@ -145,18 +145,19 @@ SDL_CondBroadcast(SDL_cond * cond)
Typical use:
Thread A:
SDL_LockMutex(lock);
while ( ! condition ) {
SDL_CondWait(cond);
}
SDL_UnlockMutex(lock);
SDL_LockMutex(lock);
while ( ! condition ) {
SDL_CondWait(cond, lock);
}
SDL_UnlockMutex(lock);
Thread B:
SDL_LockMutex(lock);
...
condition = true;
...
SDL_UnlockMutex(lock);
SDL_LockMutex(lock);
...
condition = true;
...
SDL_CondSignal(cond);
SDL_UnlockMutex(lock);
*/
int
SDL_CondWaitTimeout(SDL_cond * cond, SDL_mutex * mutex, Uint32 ms)